Working… Menu

Using 3.3mm Screw Tap and Cutting Resistance to Evaluate Bone Quality Around Dental Implant

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00172718
Recruitment Status : Unknown
Verified February 2005 by National Taiwan University Hospital.
Recruitment status was:  Recruiting
First Posted : September 15, 2005
Last Update Posted : June 6, 2008
Information provided by:
National Taiwan University Hospital

Brief Summary:
Osseointegrated root form implants have been applied successfully in treating fully and partially edentulous patients and patients with single tooth missing. However, the success rate of osseointegrated dental implants was not as good in patients with poor bone quality. The reasons are believed that poor bone quality reduces the initial stability of dental implants and then reduces the success rate. For increasing initial stability of dental implants, some technical modifications are suggested in literature. However, due to lack of an objective method to evaluate bone quality, they are controversial. The purposes of this clinical study are to develop a standard procedure which using cutting resistance measured by Osseocare in surgery to evaluate the bone quality and to compare with the clinical experiences of oral surgeons. The objective outcome, initial stability of dental implant, is measured with Osstell. The analyzed results are also helpful for less experienced surgeons.

Condition or disease
Jaw, Edentulous, Partially Mouth, Edentulous

Detailed Description:

Materials & Methods:

1. Patient eligibility: Six implant surgeons will assist the experiment. The subjects are patient who will receive dental implant treatment in Dental department of NTUH. Sixty subjects are offered by six surgeons. They must fully fill the requirements as following

Layout table for study information
Study Type : Observational
Estimated Enrollment : 60 participants
Time Perspective: Prospective
Official Title: Using 3.3mm Screw Tap to Modify the Standard Implantation Procedure and to Measure the Cutting Resistance for Establishing a More Objective Method to Evaluate the Peri-Implant Bone Quality
Study Start Date : March 2005

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   30 Years to 60 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • No major systemic diseases
  • Mouth opening: > 35 mm
  • Missing teeth at anterior or premolar area and willing to restored by implantation

Exclusion Criteria:

  • Uncomfortable or other condition occurring in the surgical procedure make the measuring unacceptable

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00172718

Layout table for location contacts
Contact: Tong-Mei Wang, DDS, MS 886-2-23123456 ext 6864

Layout table for location information
Dept. of Dentistry, National Taiwan University Hospital Recruiting
Taipei, Taiwan, 100
Contact: Tong-Mei Wang, DDS, MS    886-2-23123456 ext 6864   
Sponsors and Collaborators
National Taiwan University Hospital
Layout table for investigator information
Principal Investigator: Tong-Mei Wang, DDS, MS National Taiwan University, School of Dentistry
Study Director: Li-Deh Lin, DDS, PhD National Taiwan University, School of Dentistry
Additional Information:
Layout table for additonal information Identifier: NCT00172718    
Other Study ID Numbers: 9361701264
First Posted: September 15, 2005    Key Record Dates
Last Update Posted: June 6, 2008
Last Verified: February 2005
Additional relevant MeSH terms:
Layout table for MeSH terms
Jaw, Edentulous
Jaw, Edentulous, Partially
Mouth, Edentulous
Mouth Diseases
Stomatognathic Diseases
Tooth Diseases
Jaw Diseases
Musculoskeletal Diseases